And those dog breeders who thought that was freakin’ adorable decided to start breeding those vertically-challenged pups with other dogs in an effort to pass along the condition.
Back then, probably around 50 percent of the litter would end up with shorter legs. That’s because dwarf dogs have a dominant gene that makes them so stumpy: it’s an autosomal dominant gene, which means it’s a gene present on one of the non-sex chromosomes—and you only need one copy of the gene to have dwarfism.
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